Dan Carter will not return to French club Racing 92 due to medical reasons, the club announced on Saturday.
The double World Cup winner was set to rejoin his former club as an injury replacement for Pat Lambie at fly half but Racing has confirmed that the deal is off on medical grounds.
"As part of routine medical checks prior to the approval of players' licences, Racing 92 forwarded certain medical information to experts appointed by the Ligue National de Rugby (LNR)," the statement said. "Their opinion was unanimous: Dan Carter will not be able to play rugby in France."
"We wish Dan all the best for the future, a future as bright as his immense career."
Carter, 36, enjoyed great success during his three year spell with the French side, helping Racing secure the Top 14 title in 2016.
The club confirmed the news after Racing defeated La Rochelle 50-14 in the Top 14.